CkPython

Save All MIME Attachments to Files

Demonstrates the Chilkat Mime.PartsToFiles method, which recursively traverses the MIME tree and saves each part having a nonempty filename parameter to a directory. The first argument is the destination directory and the second is a StringTable that receives the saved filenames.

Note: The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: This extracts every named attachment from a message in one call, walking the whole tree so it finds attachments nested inside multipart containers. It saves only parts that declare a filename — inline body parts without one are skipped — and reports what it wrote via the StringTable, which is handy for logging or follow-up processing. The destination directory must already exist.

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import sys
import chilkat

success = False

mime = chilkat.CkMime()
success = mime.LoadMimeFile("qa_data/multipart_message.eml")
if (success == False):
    print(mime.lastErrorText())
    sys.exit()

#  Recursively traverse the MIME tree and save each part that has a nonempty "filename" parameter
#  to a directory.  The 1st argument is the destination directory and the 2nd is a StringTable
#  that receives the saved filenames.
savedFiles = chilkat.CkStringTable()
success = mime.PartsToFiles("qa_output/attachments",savedFiles)
if (success == False):
    print(mime.lastErrorText())
    sys.exit()

n = savedFiles.get_Count()
print("Saved " + str(n) + " files:")

for i in range(0,n):
    name = savedFiles.stringAt(i)
    if (savedFiles.get_LastMethodSuccess() == False):
        print(savedFiles.lastErrorText())
        sys.exit()

    print(name)